doesn't seems to work, because it makes a query everytime I try to access to the tenants list.
Is there a way to access to the tenant list, and best, to do a filter on I (like first Tenant found which has no name).

select_related works by creating an SQL join and including the fields
of the related object in the SELECT statement. For this reason,
select_related gets the related objects in the same database query.
However, to avoid the much larger result set that would result from
joining across a ‘many’ relationship, select_related is limited to
single-valued relationships - foreign key and one-to-one.

prefetch_related, on the other hand, does a separate lookup for each
relationship, and does the ‘joining’ in Python.

update for comment:

it is better to place filter first here (order in django can affect on results):